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Message started by LucaB on Oct 16th, 2011 at 6:12am

Title: Probe resistance
Post by LucaB on Oct 16th, 2011 at 6:12am
Hello to all
A question:
On pico I never understood what is the probe resistance.
I tried to do some measure of resistance, but it is always zero.
Does anyone know the practical use of this probe?
Thanks

Sonda_resistenza.JPG (107 KB | )

Title: Re: Probe resistance
Post by Tom Roberts on Oct 16th, 2011 at 9:23am

Luca,

Ignore the resistance probe in the loaded section.  It should not be there.

Title: Re: Probe resistance
Post by LucaB on Oct 18th, 2011 at 3:50pm

Tom Roberts wrote on Oct 16th, 2011 at 9:23am:
Luca,

Ignore the resistance probe in the loaded section.  It should not be there.

Hi Tom, and as a tool should be?

Title: Re: Probe resistance
Post by Tom Roberts on Oct 18th, 2011 at 4:25pm
There are PicoScope models that have this capability but that probe should not appear if your scope does not support it.  Just a bug.

But...resistance is a generally useless measurement anyway.  Voltage drop and current are much better as they test under dynamic load conditions.

Besides, you can graph resistance if you so desire by deploying a math channel using Ohm's law.

ECT_test_001.jpg (351 KB | )

Title: Re: Probe resistance
Post by LucaB on Oct 21st, 2011 at 3:26pm
With the response Tom, very nice.
The resistance control in graphical form is useful when I unmount floating gasoline to control

Title: Re: Probe resistance
Post by Tom Roberts on Oct 21st, 2011 at 3:52pm



Quote:
The resistance control in graphical form is useful when I unmount floating gasoline to control


Huh?   :-?

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